CA2050807C - Process for the preparation of photographic color copies - Google Patents

Process for the preparation of photographic color copies Download PDF

Info

Publication number
CA2050807C
CA2050807C CA002050807A CA2050807A CA2050807C CA 2050807 C CA2050807 C CA 2050807C CA 002050807 A CA002050807 A CA 002050807A CA 2050807 A CA2050807 A CA 2050807A CA 2050807 C CA2050807 C CA 2050807C
Authority
CA
Canada
Prior art keywords
copy
spectral
transformation
process according
density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002050807A
Other languages
English (en)
French (fr)
Other versions
CA2050807A1 (en
Inventor
Walter Kraft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gretag Systems Inc
Original Assignee
Gretag Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gretag Systems Inc filed Critical Gretag Systems Inc
Publication of CA2050807A1 publication Critical patent/CA2050807A1/en
Application granted granted Critical
Publication of CA2050807C publication Critical patent/CA2050807C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers
    • G03B27/735—Controlling exposure by variation of spectral composition, e.g. multicolor printers in dependence upon automatic analysis of the original

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Optical Elements Other Than Lenses (AREA)
CA002050807A 1990-09-10 1991-09-06 Process for the preparation of photographic color copies Expired - Fee Related CA2050807C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2930/90-7 1990-09-10
CH293090 1990-09-10

Publications (2)

Publication Number Publication Date
CA2050807A1 CA2050807A1 (en) 1992-03-11
CA2050807C true CA2050807C (en) 2001-03-06

Family

ID=4244824

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002050807A Expired - Fee Related CA2050807C (en) 1990-09-10 1991-09-06 Process for the preparation of photographic color copies

Country Status (5)

Country Link
US (1) US5119125A (de)
EP (1) EP0475897B1 (de)
JP (1) JP3284314B2 (de)
CA (1) CA2050807C (de)
DE (1) DE59102416D1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223892A (en) * 1991-04-19 1993-06-29 Fuji Photo Film Co., Ltd. Photographic printing method
US5561494A (en) * 1992-06-15 1996-10-01 Fuji Photo Film Co., Ltd. Method of and apparatus for determining exposure amount in copying apparatus
AU4995393A (en) * 1992-07-31 1994-03-03 Pressco Technology, Inc. Inspection system using compressed image data
DE59209338D1 (de) * 1992-09-11 1998-06-25 Gretag Imaging Ag Verfahren zur Erstellung von Kopien von fotografischen Kopiervorlagen
US5555073A (en) * 1993-06-23 1996-09-10 Noritsu Koki Co., Ltd. Correcting method and device for a photographic copying apparatus
CH690204A5 (de) * 1994-02-16 2000-05-31 Agfa Gevaert Ag Verfahren und Vorrichtung zur Herstellung von Kopien von Kopiervorlagen für hohe Qualitätsanforderungen.
DE59509010D1 (de) * 1994-08-16 2001-03-15 Gretag Imaging Ag Verfahren und Vorrichtung zur Erzeugung von Index-Prints auf bzw. mit einem photographischen Printer
EP0697629B1 (de) 1994-08-16 2001-02-07 Gretag Imaging Ag Verfahren und Vorrichtung zur Erzeugung von Index-Prints auf bzw. mit einem photographischen Printer
US5959720A (en) * 1996-03-22 1999-09-28 Eastman Kodak Company Method for color balance determination
JPH09294215A (ja) * 1996-02-29 1997-11-11 Konica Corp 色補正条件算出方法、色補正方法、色補正条件算出装置、色補正装置および記憶媒体
EP0827017B1 (de) * 1996-07-26 2003-12-10 Gretag Imaging Ag Verfahren zur Kalibrierung eines fotografischen Kopiergeräts
EP0825481B1 (de) * 1996-08-21 2002-12-18 Gretag Imaging Ag Verfahren zum Erstellen fotografischer Kopien von fotografischen Kopiervorlagen
DE59610861D1 (de) * 1996-08-29 2004-01-22 Imip Llc Wilmington Verfahren zur Erzeugung von Indexprints
EP1033866A3 (de) 1997-07-24 2004-04-21 Imip Llc Auf digitaler Bildverarbeitung basierendes System zur Herstellung von Bildern
EP1030214A3 (de) 1999-01-29 2003-04-16 Imip Llc Verfahren zum Optimieren der Beleuchtungsverteilung in einem photographischen Kopiergerät
DE59910829D1 (de) 1999-01-29 2004-11-18 Imip Llc Wilmington Maske und Verfahren zum Ändern eines Helligkeitsprofils einer fotografischen Abbildung beim fotografischen oder digitalen Kopieren
CA2325263A1 (en) 1999-11-11 2001-05-11 Gretag Imaging Trading Ag Optimization apparatus for photographic image data
EP1231564B1 (de) 2001-02-09 2007-03-28 Imaging Solutions AG Digitale lokale Bildeigenschaftssteuerung mittels Masken
US6584435B2 (en) * 2001-08-30 2003-06-24 Xerox Corporation Systems and methods for determining spectra using dynamic karhunen-loeve algorithms with measurements from led color sensor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159174A (en) * 1977-05-31 1979-06-26 Eastman Kodak Company Method and apparatus for adjusting the correction levels in a settable matrix printer
US4154523A (en) * 1977-05-31 1979-05-15 Eastman Kodak Company Exposure determination apparatus for a photographic printer
US4884102A (en) * 1985-05-22 1989-11-28 Fuji Photo Film Co., Ltd. Controlling method for a photographic system
US4922273A (en) * 1987-04-02 1990-05-01 Konica Corporation Compression method of halftone image data
DE3875691D1 (de) * 1987-10-15 1992-12-10 Gretag Ag Fotografisches farbkopiergeraet und belichtungssteuerungsverfahren.
DE3737775C2 (de) * 1987-11-06 1997-05-07 Agfa Gevaert Ag Verfahren und Vorrichtung zur Messung der Dichtewerte einer Kopiervorlage
DE58905761D1 (de) * 1988-09-23 1993-11-04 Gretag Imaging Ag Belichtungssteuerungsverfahren und fotografisches farbkopiergeraet.
EP0420816B1 (de) * 1989-09-29 1994-05-25 Gretag Imaging Ag Belichtungssteuerungsverfahren und fotografisches Farbkopiergerät

Also Published As

Publication number Publication date
JP3284314B2 (ja) 2002-05-20
CA2050807A1 (en) 1992-03-11
EP0475897A1 (de) 1992-03-18
JPH04247446A (ja) 1992-09-03
US5119125A (en) 1992-06-02
DE59102416D1 (de) 1994-09-08
EP0475897B1 (de) 1994-08-03

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